— I can’t get through to the general manager’s office.—The line is busy. Someone ________ the telephone.
#76155
A
must have used
B
could use
C
could have used
D
must be using
推荐题目
— _______ we clean the classroom at once? — No, you _______. You _______ clean it after school.
#78132
A
Must; needn’t; may
B
Must; mustn’t; can.
C
Shall; can’t; must
D
Need; mustn’t; may
You ______ to the party if you’re so busy.
#76821
A
don’t need come
B
not need coming
C
needn’t come
D
need not to come
—Will you read me a story ,Mummy? --OK.You________have one if you go to bed as soon as possible.
#63618
A
might
B
must
C
could
D
shall
The students be in the classroom because there are lights in it.
#75790
A
can
B
must
C
can’t
D
mustn’t